True to the name, the ‘Sunny Knock Out’ rose has yellow, vibrant flowers as bright as the sun that fade to a pastel cream color. Yellow roses are a beautiful addition to gardens, especially ‘The Sunny Knock Out’. The plant is never compromised as it is drought tolerant, disease resistant and low maintenance making it a one of kind rose addition to your borders, hedges and garden beds. If roses were having a popularity contest, the 'Knock Out' rose series would take first place. This family of roses has seven brilliant colors that flash their beautifully showy blooms from spring to frost. Use the 'Knock Out' series to create a vibrant hedge, brilliant border, or mix with other various perennials in your garden beds to present real pizzazz. Being so low maintenance, these roses are the perfect addition to any garden. Cut back in early spring after danger of frost and watch your rose flourish through the entire season. US Plant Patent #18,562.

Zone
This refers to the USDA hardiness zone assigned to each part of the country, based on the minimum winter temperature that a region typically experiences. Hardiness zone ranges are provided for all perennial plants and you should always choose plants that fall within your range.

4-11

Sun
The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height
The typical height of this product at maturity.

36-48 inches

Spread
The width of the plant at maturity.

36-48 inches

Bloom Season
The time of the year when this product normally blooms.

Fall, Summer

Resistant To
Adverse garden conditions, such as heat or frost, deer or rabbits, that this product can tolerate well.

Start IndoorsStart Indoors
Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer

TransplantTransplant
When to transplant bulbs or roots in the garden for spring

Start OutdoorsStart Outdoors
Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer

Start Indoors FallStart Indoors Fall
Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall

Transplant FallTransplant Fall
Transplant Fall-When to transplant bulbs or roots in the garden for fall

Start Outdoors FallStart Outdoors Fall
Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall

First Date: Mar-28 - Last Date: May-16

First Date: Sep-17 - Last Date: Oct-29

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Growing information

Rose: Bareroot or Potted Perennial Plant

How to Plant

Planting Bare Root Plants:

Choose a site with at least 8 hours of sun each day, where roots will not be in competition with the roots of other plants. Avoid areas where plants are not protected from harsh winds and cold. Plant climbers where they may be adequately supported. Roses grow well in rich, moisture-retentive soil.

Build a cone of soil at the bottom of the hole to support and spread roots around before backfilling

In cold winter zones, set the plant so that the base of the canes (bud union) is 4 inches below ground level. In warmer zones, the bud union should be just above ground level.

Replace the soil, firming it well around the plant with your hands.

Water very well

Apply 2-3 inches of organic mulch to keep the soil cool and moist

Planting Potted Plants:

Choose a site with at least 8 hours of sun each day, where roots will not be in competition with the roots of other plants. Avoid areas where plants are not protected from harsh winds and cold. Plant climbers where they may be adequately supported. Roses grow well in rich, moisture-retentive soil.

Dig a hole for each plant large enough to amply accommodate the root ball.

Place the top of the root ball even with the level of the surrounding soil. Fill with soil to the top of the root ball. Press soil down firmly with your hand.

Water deeply. The water will seal off any air pockets around the root ball.

After planting be sure to mark the plants with plant labels so you know where they are and what varieties they are.

Apply 2-3 inches of organic mulch to keep the soil cool and moist.

How to Grow

Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients. Control them by either cultivating often or use a mulch to prevent their seeds from germinating.

Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1-2 inches of rain per week during the growing season. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated. Keep soil moisture steady when plants are in bloom. Water on bright sunny mornings to give foliage enough time to dry out.

Use a slow release fertilizer at the recommended rate. Repeat bloomers need a steady supply of nutrients through the season.

Deadhead spent blooms to increase repeat blooming and keep plants tidy. Cut back dead flowers to the first five leaflet leaf.

To protect plants from harsh winter cold, mound the base of stems with 8 inches of shredded bark once winter sets in. In areas with severe winters, provide waterproof cover over the top.

Prune out dead, diseased or weakened stems at any time. Prune for shape, size or to improve air circulation in late winter after danger of a hard freeze. See pruning tips below.

Monitor for pests and diseases.

Growing Tips

Winter pruning of shrub roses: Prune when the season starts to warm up and the buds begin to swell. During the first year, prune plants only lightly, leaving two thirds of the plant. Once the plants are established, prune to half their size into a rounded bush. Remove any diseased, dead or weak stems.

Summer pruning of shrub roses: Remove 18-24 inches of stem after flowering, leaving 2-3 leaves of the current season’s growth. This helps keep the plant’s height in check, especially in warmer areas where repeat bloomers tend to get taller during the season. Spent flowers left on the plant may develop attractive rose hips in autumn. Stop deadheading towards summer’s end to prevent young, frost-sensitive shoots from developing.

Winter pruning of climbing roses: In winter prune the lateral branches that bloomed the previous season to 3 or 4 buds, or about 6 inches ling. Tie in the long, strong main stems and do not cut these back unless they are old, weak or dead. With trellises and other supports, stems can be fanned out to encourage side shoots and more flowering.

Cut flowers in the morning. Cut stems back to a five leaflet leaf. Immediately plunge cut stems into water.

Product Details

Zone

4-11

Sun

Full Sun

Height

36-48 inches

Spread

36-48 inches

Bloom Season

Fall, Summer

Resistant To

Disease

Ornamental Use

Beds, Cut Flowers

Genus

Rosa

Life Cycle

Perennial

Reviews

Rose, The Sunny Knock Out is rated
1.0 out of
5 by
1.

Rated 1 out of
5 by
short from
DisappointedI ordered from Burpee only because I received a gift card. The Sunny Knock Out Rose bushes I received surprised me. They are teeny, tiny babies. I expect to have to wait a good five years before they look like anything in my garden. I am disappointed every time I look at them and wish I had purchased the Sunny Knock Out Rose bushes for $15.00 from my local grocery store.